ES2302480B1 - SUPPORT FOR FORMWORK WITH ADJUSTABLE FORM. - Google Patents
SUPPORT FOR FORMWORK WITH ADJUSTABLE FORM. Download PDFInfo
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- ES2302480B1 ES2302480B1 ES200703371A ES200703371A ES2302480B1 ES 2302480 B1 ES2302480 B1 ES 2302480B1 ES 200703371 A ES200703371 A ES 200703371A ES 200703371 A ES200703371 A ES 200703371A ES 2302480 B1 ES2302480 B1 ES 2302480B1
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- support
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- joints
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- 238000009415 formwork Methods 0.000 title claims abstract description 41
- 230000000712 assembly Effects 0.000 claims abstract description 3
- 238000000429 assembly Methods 0.000 claims abstract description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910001296 Malleable iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 235000013580 sausages Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/062—Forms for curved walls
- E04G11/065—Forms for curved walls with mechanical means to modify the curvature
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Soporte para encofrados con forma ajustable. El dispositivo comprende múltiples tramos o conjuntos de soporte de paneles individuales de encofrado sucesivos, articulados cada uno con el siguiente y soportando cada uno de ellos un tramo individual de panel de encofrado, siendo ajustable individualmente el ángulo de la articulación de cada tramo con el siguiente para la adaptación del conjunto de tramos de soporte de los paneles individuales a la forma curvada deseada.Formwork support with adjustable shape. The device comprises multiple sections or support assemblies of successive individual formwork panels, each articulated with the following and each supporting a single section of formwork panel, the joint angle of each section being individually adjustable with the following for adapting the set of support sections of the individual panels to the desired curved shape.
Description
Soporte para encofrados con forma ajustable.Formwork support with adjustable shape.
La presente invención está destinada a dar a conocer un nuevo soporte para tableros de encofrado que permite ajustar la forma exterior del mismo.The present invention is intended to give know a new support for formwork boards that allows adjust the outer shape of it.
Como es sabido, la limitación de la zona a ocupar por la masa de hormigón en diferentes tipos de construcción se efectúa mediante paneles de encofrado que, soportados de forma pertinente, van determinando la zona a ocupar por el hormigón en masa y las armaduras de refuerzo. La realización de encofrados de tipo plano, tanto para muros como para forjados de piso, techos, columnas, etc. está resuelta con diferentes tipos de dispositivos que soportan los tableros de encofrado en posición.As is known, the limitation of the area to occupy by concrete mass in different types of construction It is done by formwork panels that, supported in a way relevant, they are determining the area to be occupied by the concrete in mass and reinforcement reinforcement. The formwork of flat type, both for walls and floor slabs, ceilings, columns, etc. is resolved with different types of devices which support the formwork boards in position.
Sin embargo, en el caso de encofrados destinados a formas algo más complejas, en especial formas curvadas, de tipo cóncavo, convexo o mixto, tradicionalmente se acude a dispositivos de soporte del encofrado que de forma predominante son realizados por medios manuales o semimanuales. Ello comporta un tiempo excesivamente prolongado para la realización de dichos encofrados, y para su montaje, desmontaje, etc. Además y de manera habitual, los encofrados de este tipo no son de utilización repetitiva, debiéndose constituir para cada tramo de las superficie de tipo curvado, ya sea cóncava o convexa con respecto a la cara de encofrado.However, in the case of formwork intended to somewhat more complex shapes, especially curved shapes, of type concave, convex or mixed, devices are traditionally used formwork support that are predominantly made by manual or semi-manual means. It takes a while excessively prolonged for the realization of said formwork, and for assembly, disassembly, etc. In addition and as usual, formwork of this type is not repetitive use, must be constituted for each section of the type surface curved, either concave or convex with respect to the face of formwork
La Patente U.S.A. n° 5.857.300 da a conocer elementos de encofrado con radio ajustable que comportan travesaños de conexión con husillos roscados que actúan sobre alas salientes del encofrado, siendo ajustables mediante sistemas de tuerca y contratuerca. Esta solución técnica es compleja y requiere un gran número de piezas para su realización, que deben ser desmontadas individualmente después de utilizar el encofrado.U.S.A. No. 5,857,300 discloses formwork elements with adjustable radius that involve crossbars connection with threaded spindles acting on protruding wings formwork, being adjustable by nut systems and locknut. This technical solution is complex and requires a great number of parts for its realization, which must be disassembled individually after using the formwork.
La Patente U.S.A. nº 5.125.617 se refiere a encofrado curvado ajustable en el radio que presenta articulaciones fijas entre cada dos paneles inmediatos y alas externas en las que se puede ajustar la posición mediante un sistema de tornillos y tuerca y contratuerca, presentando inconvenientes similares a la Patente U.S.A. anteriormente citada.U.S.A. No. 5,125,617 refers to adjustable curved formwork in the radius presenting joints fixed between every two immediate panels and external wings on which the position can be adjusted using a screw system and nut and locknut, presenting similar problems to the U.S.A. previously cited.
La Patente U.S.A. nº 6.530.552 se refiere a un encofrado curvado con medios para variar la curvatura que comprenden una complicada estructura con múltiples travesaños unidos mediante tensores ajustables y dotados de orificios colisos que se ajustan a su vez con intermedio de cartelas articuladas a unos soportes del propio panel, dando lugar a una estructura extraordinariamente difícil de manejar y compleja en su fabricación.U.S.A. No. 6,530,552 refers to a curved formwork with means to vary the curvature that they comprise a complicated structure with multiple crossbars joined by adjustable tensioners and equipped with collision holes which are adjusted in turn by means of articulated posters to some supports of the panel itself, giving rise to a structure extraordinarily difficult to handle and complex in its manufacturing.
La presente invención está destinada a solucionar en parte los inconvenientes mencionados, permitiendo el encofrado rápido y eficaz de superficies de forma compleja, especialmente forma curvada, tanto cóncava como convexa.The present invention is intended to partially solve the aforementioned problems, allowing fast and efficient formwork of complex surfaces, especially curved shape, both concave and convex.
Las características esenciales de la presente invención se reflejan en su reivindicación 1, haciendo referencia las reivindicaciones dependientes a detalles de la propia invención.The essential characteristics of this invention are reflected in its claim 1, making reference claims dependent on details of the own invention.
El encofrado objeto de la presente invención comprende una serie de tramos, formado cada uno de ellos por un conjunto de vigas verticales de soporte que actúan como generatrices de la superficie curva a realizar mediante el encofrado, combinándose cada conjunto o tramo con vigas transversales que ejercen la función de directrices de la superficie curva y que presentan como característica determinante la de disponer entre cada dos tramos, de articulaciones fácilmente regulables en ángulo, es decir, con capacidad de variación fácil del ángulo que forman entre sí cada dos vigas directrices de tramos adjuntos. Para facilitar el acoplamiento según ángulos variables de dos vigas directrices adjuntas, las articulaciones serán variables de manera continua mediante un simple tornillo ajustable de forma manual o por otros medios manuales o eventualmente mecanizados.The formwork object of the present invention It comprises a series of sections, each formed by a set of vertical support beams that act as generatrices of the curved surface to be performed by formwork, combining each set or section with beams transversal that exercise the function of guidelines of the curved surface and presenting as a determining characteristic the one to have between each two sections, of joints easily adjustable angle, that is, with easy variation capability of the angle that they form between each two directive beams of sections attached. To facilitate coupling according to varying angles of two attached guide beams, the joints will be variables continuously using a simple adjustable screw manually or by other manual means or eventually mechanized
En una realización preferente, las articulaciones entre cada dos vigas adjuntas destinadas a ser utilizadas como directrices quedarán constituidas mediante paralelogramos articulados, dos de cuyos lados están asociados de manera fija a las respectivas vigas directrices adjuntas, disponiendo de un tornillo transversal cuyo giro provoca el desplazamiento de los elementos del paralelogramo, lo cual se transmite en una variación del ángulo relativo que forman entre sí dos lados y, por lo tanto, las vigas directrices correspondientes. La forma de realización de las articulaciones en forma de paralelogramo articulado podrá variar entre amplios límites, pudiéndose realizar mediante simples brazos troquelados y/o embutidos de pletina de acero y taladrados para permitir su acoplamiento articulado y para recibir las piezas internas destinadas a recibir el tornillo de ajuste o bien piezas forjadas o fundidas del acero o fundición maleable adecuados para su función. La unión entre la pieza en forma de paralelogramo articulado y las vigas directrices adyacentes se podrá realizar por interposición de vástagos salientes en el interior de las vigas huecas adyacentes, mediante pernos u otros medios.In a preferred embodiment, the joints between every two attached beams intended to be used as guidelines will be constituted by articulated parallelograms, two of whose sides are associated with fixed way to the respective beams attached guidelines, having a transverse screw whose rotation causes the displacement of the parallelogram elements, which is transmits in a variation of the relative angle that form each other two sides and, therefore, the corresponding guide beams. The embodiment of the joints in the form of articulated parallelogram may vary between wide limits, being able to perform by means of simple die-cut arms and / or sausages of steel plate and drilled to allow its articulated coupling and to receive internal parts intended to receive the adjusting screw or forged parts or cast steel or malleable cast iron suitable for its function. The union between the piece in the form of an articulated parallelogram and the Adjacent guidelines beams may be made by interposition of protruding stems inside adjacent hollow beams, by bolts or other means.
Una de las ventajas que es posible conseguir con el soporte para encofrados objeto de la presente invención es la conservación del ángulo a que se han regulado las articulaciones al desmontar las vigas, lo cual permite en una misma obra trasladar de un lugar a otro el conjunto entero del encofrado, conservando el ángulo y facilitando posteriormente el montaje del conjunto conservando la misma configuración. Este es el caso, por ejemplo, de encofrado de muros curvados con curvatura constante y de gran extensión. Esta característica no puede ser conseguida con los dispositivos conocidos actualmente en el estado de la técnica en los que, una vez efectuado el desmontaje de las piezas, éstas se tienen que volver a montar ajustándolas nuevamente.One of the advantages that can be achieved with The formwork support object of the present invention is the conservation of the angle at which the joints have been regulated by disassemble the beams, which allows in the same work to transfer from from one place to another the entire formwork, conserving the angle and subsequently facilitating assembly assembly keeping the same configuration. This is the case, for example, Formwork curved walls with constant curvature and large extension. This feature cannot be achieved with the devices currently known in the state of the art in which, once the pieces have been disassembled, they are they have to reassemble by adjusting them again.
Para su mejor comprensión se adjuntan a título de ejemplo explicativo pero no limitativo unos dibujos representativos de una realización preferente del encofrado objeto de la presente invención.For your best understanding they are attached to title explanatory example but not limiting some drawings representative of a preferred embodiment of the object formwork of the present invention.
La figura 1 muestra una vista en perspectiva de un encofrado completo según la presente invención destinado a un tramo curvado.Figure 1 shows a perspective view of a complete formwork according to the present invention intended for a curved section
La figura 2 muestra una vista en planta del propio encofrado de la figura 1.Figure 2 shows a plan view of the formwork itself of figure 1.
Las figuras 3 y 4 muestran una vista en perspectiva de una realización de una articulación en forma de paralelogramo articulado.Figures 3 and 4 show a view in perspective of an embodiment of a joint in the form of articulated parallelogram.
La figura 5 muestra una vista en alzado frontal de una segunda realización de paralelogramo articulado de ajuste.Figure 5 shows a front elevation view of a second embodiment of articulated parallelogram of adjustment.
Las figuras 6 y 7 muestran sendas secciones por los planos de corte indicados en la figura 5.Figures 6 and 7 show sections by the cutting planes indicated in figure 5.
Tal como se muestra en la figura 1, el objetivo del dispositivo de encofrado objeto de la presente invención estriba en determinar una superficie curvada (1) mediante conjuntos o tramos de vigas rectilíneas y articulaciones intermedias. Si bien en la figura se ha representado una superficie (1) que es convexa con respecto al exterior, es evidente que también se podría realizar el dispositivo de encofrado con iguales características para una superficie exterior cóncava o mixta, dependiendo de la forma deseada para el elemento de hormigón a fabricar, pudiéndose indicar como ejemplos, puentes en curva, columnas de grandes dimensiones y otros muchos ejemplos que se pueden presentar en la práctica.As shown in Figure 1, the objective of the formwork device object of the present invention is to determine a curved surface (1) by means of assemblies or sections of rectilinear beams and intermediate joints. While a surface (1) that is convex has been shown in the figure with respect to the exterior, it is evident that one could also make the formwork device with the same characteristics for a concave or mixed outer surface, depending on the desired shape for the concrete element to be manufactured, being able to indicate as examples, curved bridges, large columns dimensions and many other examples that can be presented in the practice.
El dispositivo objeto de la presente invención presenta grupos o tramos de vigas rectas verticales en función de generatrices de la superficie curva, por ejemplo, los grupos de vigas que se han representado verticales en el dibujo, (2), (3) y (4). Cada uno de los grupos determinará una zona de la superficie curva a encofrar y recibirá el correspondiente panel de encofrado que se han representado con los numerales (5), (6) y (7). Dichos paneles podrán ser planos o ligeramente curvados, uniéndose entre sí para determinar una superficie única de encofrado. La disposición de varios grupos de vigas (2), (3), (4)... en función de generatrices permitirá adaptar los paneles exteriores de manera que la superficie de encofrado tenga la estructura deseada. Como es evidente, dicha estructura podrá ser muy variable al comprender superficies cóncavas, convexas, mixtas, combinadas, etc.The device object of the present invention presents groups or sections of vertical straight beams depending on generatrices of the curved surface, for example, the groups of beams that have been represented vertically in the drawing, (2), (3) and (4). Each of the groups will determine a surface area curve to formwork and you will receive the corresponding formwork panel that have been represented with the numerals (5), (6) and (7). Sayings panels may be flat or slightly curved, joining between yes to determine a unique formwork surface. The arrangement of several groups of beams (2), (3), (4) ... depending on generatrices will allow to adapt the exterior panels so that The formwork surface has the desired structure. How is it Obviously, this structure can be very variable when understanding concave, convex, mixed, combined surfaces, etc.
El dispositivo de encofrado se completa mediante vigas horizontales unidas a las vigas verticales (2), (3), (4)... en cada grupo, habiéndose representado como ejemplo con los numerales (8), (9) y (10) para el grupo de vigas generatrices (2). Dichas vigas horizontales (8), (9) y (10) quedan dispuestas en sentido transversal, por ejemplo, perpendicularmente a las vigas (2) si bien, tal como es evidente, podrían adoptar otras estructuras en ángulo, etc. Las vigas (8), (9) y (10) cumplen por lo tanto una función similar a una directriz geométrica con respecto a las generatrices (2), (3), (4)...The formwork device is completed by horizontal beams attached to vertical beams (2), (3), (4) ... in each group, having been represented as an example with the numerals (8), (9) and (10) for the group of generating beams (2). Said horizontal beams (8), (9) and (10) are arranged in transverse direction, for example, perpendicular to the beams (2) although, as is evident, they could adopt other angled structures, etc. Beams (8), (9) and (10) comply with therefore a function similar to a geometric directrix with regarding the generatrices (2), (3), (4) ...
Una característica esencial de la presente invención consiste en la unión de las vigas transversales adyacentes de cada dos conjuntos de vigas generatrices mediante articulaciones ajustables tales como (11), (12) y (13). Dichas articulaciones serán fácilmente ajustables de manera que varíen el ángulo relativo formado por las respectivas vigas y tramos adyacentes. Así, por ejemplo, tal como se ha mostrado en la figura 2, en la que se ha representado una realización con dos vigas generatrices, es decir, verticales, en cada tramo, cada dos vigas horizontales o directrices sucesivas, tales como (14) y (15) están unidas por una articulación (16) que preferentemente presentará estructura de paralelogramo articulado accionable mediante un tornillo de ajuste (17). La articulación (16) queda unida por dos de sus lados con las vigas (14) y (15), de manera que al ajustar mediante el tornillo (17) la apertura o cierre de la articulación (16) formada por un paralelogramo articulado variará la posición angular relativa de dichas vigas (14) y (15), pudiéndose adaptar a la forma del encofrado que se desea. Los paneles de encofrado fijados a las vigas verticales o directrices, por ejemplo, (18) y (19) de dos tramos adyacentes podrán tener forma rectilínea o curvada para adaptarse mejor a la forma definitiva que se desea. Como es evidente, al variar el número de tramos individuales del dispositivo, la desviación de la forma obtenida mediante múltiples paneles rectos será muy reducida con respecto al forma curva deseada, si bien se podría conseguir una mayor adaptación, tal como se ha indicado, mediante paneles suavemente curvados y adaptados a la forma definitiva deseada.An essential feature of the present invention consists of the union of the cross beams adjacent to every two sets of generating beams by adjustable joints such as (11), (12) and (13). These joints will be easily adjustable so that they vary the relative angle formed by the respective beams and sections adjacent. Thus, for example, as shown in the figure 2, in which an embodiment with two beams has been shown generatrices, that is, vertical, in each section, every two beams horizontal or successive guidelines, such as (14) and (15) are joined by a joint (16) that will preferably present articulated parallelogram structure operable by means of a adjusting screw (17). The joint (16) is joined by two from its sides with the beams (14) and (15), so that when adjusting by means of the screw (17) the opening or closing of the joint (16) formed by an articulated parallelogram will vary the position relative angle of said beams (14) and (15), being able to adapt to the formwork form desired. Formwork panels fixed to vertical beams or guidelines, for example, (18) and (19) of two adjacent sections may be rectilinear or curved to better adapt to the final shape desired. As is evident, by varying the number of individual sections of the device, the deviation of the form obtained by multiple straight panels will be greatly reduced with respect to the curved shape desired, although more adaptation could be achieved, such as It has been indicated, by gently curved panels adapted to the final desired form.
La articulación (16) ha sido representada de manera más detallada en las figuras 3 y 4, observándose dos pares de lados paralelos respectivamente (20), (20') y (21), (21'). Las articulaciones se realizan mediante ejes transversales tales como los indicados con los numerales (22), (23), (24) y (25). Un tornillo transversal (26) eventualmente con cabeza hexagonal (27) permite la separación relativa o acercamiento de los lados de la articulación (16). Dos de los lados de dicha articulación, en particular, los lados (20) y (21), están asociados a respectivas uniones (28) y (29) para las vigas directrices adyacentes. En el caso representado se observa la disposición de vástagos salientes (30) y (31) destinados a coincidir en el interior de las respectivas vigas transversales huecas que se han representado ya acopladas en la figura 4, pudiendo corresponder a las vigas transversales (14) y (15) de la figura 2.The joint (16) has been represented by more detailed way in figures 3 and 4, observing two pairs of parallel sides respectively (20), (20 ') and (21), (21'). The joints are made using transverse axes such as those indicated with the numerals (22), (23), (24) and (25). A transverse screw (26) possibly with hexagonal head (27) allows the relative separation or approach of the sides of the joint (16). Two of the sides of said joint, in particular, the sides (20) and (21), are associated with respective joints (28) and (29) for adjacent guide beams. At case represented the arrangement of outgoing stems is observed (30) and (31) intended to coincide within the respective hollow cross beams that have already been represented coupled in figure 4, and may correspond to the beams cross sections (14) and (15) of figure 2.
En la figura 5 se ha representado una versión de una articulación (32) en la que los brazos del paralelogramo articulado (33) y (34) presentan una estructura distinta apropiada para su fabricación por forja o moldeo. Como es de comprender, el acoplamiento a las vigas adyacentes (35) y (36) se puede realizar de manera similar a la anteriormente indicada o por cualquier otro medio habitual en la técnica como puede ser coincidencia de pletinas de soldadura, de atornillado, etc.A version of a joint (32) in which the arms of the parallelogram articulated (33) and (34) have a different appropriate structure for its manufacture by forging or molding. As you understand, the coupling to adjacent beams (35) and (36) can be performed in a manner similar to that indicated above or by any other usual medium in the art such as coincidence of welding, screwing plates, etc.
En las figuras 6 y 7 se han mostrado sendas secciones en las que se observa la articulación (32) con los brazos articulados (33) y (34) y el tornillo de ajuste (35).In figures 6 and 7, paths have been shown sections in which the joint (32) is observed with the arms articulated (33) and (34) and adjusting screw (35).
Como se comprenderá, si bien la realización mostrada tiene carácter de ejemplo preferente, no es limitativa para el alcance de la invención y en ésta se podrían introducir diferentes variantes incluidas dentro de las reivindicaciones adjuntas.As will be understood, although the realization Shown as a preferred example, it is not limiting for the scope of the invention and in it could be introduced different variants included within the claims attached.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200703371A ES2302480B1 (en) | 2007-12-19 | 2007-12-19 | SUPPORT FOR FORMWORK WITH ADJUSTABLE FORM. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200703371A ES2302480B1 (en) | 2007-12-19 | 2007-12-19 | SUPPORT FOR FORMWORK WITH ADJUSTABLE FORM. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2302480A1 ES2302480A1 (en) | 2008-07-01 |
| ES2302480B1 true ES2302480B1 (en) | 2009-03-16 |
Family
ID=39514628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200703371A Active ES2302480B1 (en) | 2007-12-19 | 2007-12-19 | SUPPORT FOR FORMWORK WITH ADJUSTABLE FORM. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2302480B1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1297040A (en) * | 1969-08-15 | 1972-11-22 | ||
| DE2140638C3 (en) * | 1971-08-13 | 1980-01-31 | Peri-Werk Artur Schwoerer Kg, 7912 Weissenhorn | Formwork for circular structures made of concrete |
| DE2805612C2 (en) * | 1978-02-10 | 1980-04-10 | Noe-Schaltechnik Georg Meyer-Keller Kg, 7334 Suessen | Belt carrier chain |
| US5125617A (en) * | 1990-03-29 | 1992-06-30 | Miller Alan P | Adjustable radius walers for forming |
| DE69723910T2 (en) * | 1996-05-15 | 2004-06-17 | Nogami, Shinichi, Daito | Elongated formwork with adjustable curvature |
| ES2178604B1 (en) * | 2001-04-27 | 2004-10-01 | Encofrados J. Alsina, S.A. | CURVED FORMWORK. |
-
2007
- 2007-12-19 ES ES200703371A patent/ES2302480B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2302480A1 (en) | 2008-07-01 |
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